Is Bishop's Weed Forever? - Knowledgebase Question

Marion, WI
Avatar for yoda2
Question by yoda2
April 23, 2000
Several years ago I made the mistake of planting Bishop's Weed in my border garden. It quickly took over and became extremely invasive. For the last three years I have been trying to get rid of it. I've sprayed it with a variety of herbicides and weed killers. I've buried it under mulch. And I have even dug up the entire area, sifted through and pulled out as many of the roots as possible. But, it's still there, hundreds and hundreds of new plants. What can I do to eliminate this mistake once and for all?

Answer from NGA
April 23, 2000
You are right, it seems nearly impossible to eradicate this plant (aegopodium). Persistence is the answer. You might try using an herbicide containing glyphosate according to the label instructions. Be very careful to apply it when the plant is in active growth as directed and wait the full time before removing the top growth. This is to ensure that the chemical translocates fully to the roots. Even so, it may take repeated applications to do it in. In the meantime, make sure the plant does not go to seed as it spreads this way in addition to the underground runners.

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